When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
If a = -7 and z = 1, what is the value of -3a(a - z)?
| 180 | |
| -168 | |
| -36 | |
| 90 |